Home / 718,983,153.78-992,187,088.82-401,448,337.26

Finding the Fourth Proportional to 718,983,153.78, 992,187,088.82 and 401,448,337.26

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Solution

The fourth proportional to 718,983,153.78, 992,187,088.82 and 401,448,337.26 is: 553,993,309.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,983,153.78 : 992,187,088.82 = 401,448,337.26 : x
  2. Step 2: Convert to fraction form
    718,983,153.78/992,187,088.82 = 401,448,337.26/x
  3. Step 3: Cross multiply
    718,983,153.78x = 992,187,088.82 × 401,448,337.26
  4. Step 4: Simplify right side
    718,983,153.78x = 398,311,857,057,628,928
  5. Step 5: Solve for x
    x = 398,311,857,057,628,928/718,983,153.78
  6. Step 6: Final answer
    x = 553,993,309.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.